... 3. 610gsm 4. top lacquered BACKLITNUCLEARSIGN® backlit flex constitute vinyl surfaces and inner high tenacity polyester yarn. NUCLEARSIGN® backlit flex ... , lithographic offset printing, etc. NUCLEARSIGN® backlit flex is applicable to lettering mounting, trim, kiss cut, die cut, grommets, overlap hem, ... 1.52mts*30mts (reel length) light transimittancewell light diffusion backlit vinyl flex banner 610g